During October 2025, Zhang Chuntao delivered the KSAdSDK v4.9.20.3 release by updating the podspec and associated metadata in the CocoaPods/Specs repository. Working primarily with Ruby and leveraging expertise in CocoaPods and SDK management, Zhang ensured that downstream applications could seamlessly integrate the latest SDK version. The update included comprehensive release documentation outlining bug fixes, performance improvements, and potential new features, supporting both integrators and support teams. By committing a single, traceable change, Zhang maintained reproducibility and clarity in the release process. The work focused on reliability and ease of integration, reflecting a targeted and methodical engineering approach.